<template>
<div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
        <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
        <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
</div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [{
          boundaryGap: false
        }],
        yAxis: [{
          type: 'value'
        }]
      }
    }
  },
  created() {

  },
  async mounted() {
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))

    // 指定图表的配置项和数据
    const {
      data: res
    } = await this.$http.get(`reports/type/1`)
    var option = _.merge(res.data, this.options)

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option)
  },
  methods: {

  }
}
</script>
